100% Free

No Scanner Needed

Carly logo
Prices

jonathaneagle1

Peugeot 108 Hissing Sound Poor Fuel Economy

My 2017 Peugeot 108, gasoline engine, is giving me grief. It's done 105617 km. Lately, the fuel economy's gone to pot, the check engine light's on, and when I put my foot down, there's this loud hissing sound, like air escaping. I think it's an air intake leak somewhere. Any thoughts on where to start looking?

Summary of the thread

A 2017 Peugeot 108 with a gasoline engine is experiencing poor fuel economy, a check engine light, and a loud hissing sound when accelerating. The issue is suspected to be an air intake leak, possibly from a cracked or split intake hose. The suggested solution is to inspect the hoses connected to the throttle body and air intake for any visible damage or leaks. Ultimately, a split in the intake hose was identified and repaired, resolving the problem.

Did this summary help you solve your problem?

4 comment(s)

lenny_mayer3

Sounds familiar! I had similar symptoms with my old Vauxhall Corsa: higher fuel consumption and that tell-tale hissing noise! Check all the hoses connected to the throttle body and air intake, like your vacuum hose. On my Corsa, it was a cracked intake hose. Felt like I was driving a steam train!

jonathaneagle1 (community.author)

So, you reckon it's likely an intake hose leaking then? Was it obvious when you found it, or did you have to really hunt around? I'm wondering if it could be a throttle body issue as well?

lenny_mayer3

Pretty sure it's a vacuum leak. On the Corsa, the crack was on the underside of the hose, so it wasn't immediately visible. Give them a good wiggle and listen for changes in the hissing. Honestly, though, with those symptoms, and unless you're really confident, a garage with a smoke machine will find it in minutes. Probably cheaper in the long run!

jonathaneagle1 (community.author)

Took your advice and got it checked out. It was a split in the intake hose. Cost me 100€ to get it sorted. Runs like a dream now. Thanks for the help!

rmh_community_comment_box_header

community_crosslink_scanner_headline

community_crosslink_scanner_intro

community_crosslink_scanner_title

community_crosslink_scanner_price

community_crosslink_rmh_headline

community_crosslink_rmh_intro

community_crosslink_rmh_title

community_crosslink_rmh_subtitle

community_crosslink_rmh_brand

PEUGEOT

community_crosslink_rmh_model

108